However, assuming 48v 15a controller (can't remember if the 48v is 15a or 16a), then I imagine that most riders could pedal hard enough to hit the controller limit.
I'm sorry but I have to ask, is the tsdz2's controller limit set to 15A, 16A, 18A, 20A or 22A?I think the Tongsheng can be configured to a maximum 18A continuous for hill climbing although peak momentary or a few seconds current may be higher perhaps somewhere around 20-22A